A Port Neches elementary school was locked down for about four hours after a nearby gas station was robbed Tuesday morning.

Port Neches police said an armed man in a dark-colored hoodie entered the Cypress Plaza gas station, located at 3002 Nall St., and robbed a store clerk of an undetermined amount of cash at 9:06 a.m.

The suspect left the store in 1998 white Ford single-cab truck, police reported. The truck was found in Port Neches a short time later, but Chief Paul Lemoine said on Tuesday officers were still tracking the suspect.

Port Neches-Groves Superintendent Rodney Cavness ordered a lockdown of Ridgewood Elementary School moments after the nearby store was robbed. Cavness lifted the order around 1:30 p.m. after he received a call from police that the school's children were not in any danger, he said.

Port Neches and Groves police officers think the suspect wanted in the Tuesday robbery could be the same man who robbed the Food Stop #2, located at 5011 Monroe St. in Groves, on Monday.

"The suspect and vehicle description we have matches the description released by [Port Neches Police]," Groves Police Marshal Jeffrey Wilmore said.